Question

在我的Tumblr博客上，我正在尝试使用jQuery来选择具有特定比率的照片条目（imgs），并以某种方式调整它们的大小。
具体来说：如果图像的宽度大于250px，请调整其大小，使其高度为250px，宽度为“auto”。如果图像的高度大于250px，请调整其宽度，使其宽度为250px，高度为“auto”。最后，如果图像是完美的正方形，请将其调整为250px至250px。这是我目前正在使用的。如果它是奇怪的编码，请原谅我，老实说我只是摆弄它，直到我得到一些理想的结果......

<script>
$(document).ready(function() {
    $('.photo_post img').each(function() {
        var maxWidth = 250; // Max width for the image
        var maxHeight = 250;    // Max height for the image
        var ratio = 0;  // Used for aspect ratio
        var width = $(this).width();    // Current image width
        var height = $(this).height();  // Current image height

    // Check if the current width is larger than the max
    if(height > maxHeight){
        ratio = maxWidth / width;   // get ratio for scaling image
        $(this).css("width", maxWidth); // Set new width
        $(this).css("height", height * ratio);  // Scale height based on ratio
        height = height * ratio;    // Reset height to match scaled image
        width = width * ratio;    // Reset width to match scaled image
    }

    // Check if current height is larger than max
    if(height < maxHeight){
        ratio = maxHeight / height; // get ratio for scaling image
        $(this).css("height", maxHeight);   // Set new height
        $(this).css("width", width * ratio);    // Scale width based on ratio
        width = width * ratio;    // Reset width to match scaled image
        height = height * ratio;    // Reset height to match scaled image
    }
});
});
</script>

我的问题是它在所有照片上都无法正常工作我对jQuery并不是很熟悉，所以我们非常感谢有意识和详细的解答。

Answer 1

您需要检查图像是纵向还是横向，然后根据该尺寸调整尺寸。

更新了JS：

$(document).ready(function() {
$('.photo_post img').each(function() {
    var maxWidth = 250; // Max width for the image
    var maxHeight = 250;    // Max height for the image
    var ratio = 0;  // Used for aspect ratio
    var width = $(this).width();    // Current image width
    var height = $(this).height();  // Current image height


    // Portrait
    if (height > width) {

        // Check if the current height is larger than the max
        if(height > maxHeight){
            ratio = maxHeight / height; // get ratio for scaling image
            $(this).css("height", maxHeight);   // Set new height
            $(this).css("width", width * ratio);    // Scale width based on ratio
            width = width * ratio;    // Reset width to match scaled image
            height = height * ratio;    // Reset height to match scaled image

        }
    }
    // Landscape
    else {

        // Check if the current width is larger than the max
        if(width > maxWidth){
            ratio = maxWidth / width;   // get ratio for scaling image
            $(this).css("width", maxWidth); // Set new width
            $(this).css("height", height * ratio);  // Scale height based on ratio
            height = height * ratio;    // Reset height to match scaled image
            width = width * ratio;    // Reset width to match scaled image
        }
    }
});

}）;

选择，然后使用jQuery调整具有一定比例的图像

1 个答案: